Cortrosyn Cosyntropin .25 mg/mL Injection, Powder, Lyophilized, For Solution, 1 vial — NDC 71872-7318-1 (Billing 71872-7318-01)
This is a package of 1 vial of Cortrosyn Cosyntropin .25 mg/mL Injection, Powder, Lyophilized, For Solution from Medical Purchasing Solutions, LLC, marketed since Aug 2003 and currently FDA-listed. It is this product's only package size.
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
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Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
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Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · refreshed Oct 2, 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 71872-7318-01 You're viewing this Main listing | 1 VIAL in 1 BAG / 1 mL in 1 VIAL | 2024-01-01 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Cortrosyn .25 mg/mL 00548-5900-00 | Amphastar | 10 vials | — | AP | FDA listed | — |
| Cortrosyn .25 mg/mLthis 71872-7318-01 | Medical | 1 vial | — | AP | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Sep 3, 2026
- CMS NADAC weekly file
Availability & generic status
The FDA lists approved generic versions of this medicine, but that does not always mean a pharmacy can get one today. Patent rules, launch agreements, supply and pricing can affect when generics actually arrive.
Where does this data come from?
- FDA Orange Book · refreshed Sep 3, 2026
Inactive Ingredients / Excipients
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UNII 451W47IQ8X
Sodium chloride is common table salt. It's used in medicines as a buffer to maintain proper pH, as a filler to add bulk, or to adjust the osmotic balance in liquid formulations.
1 inactive ingredient listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
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Manufacturer & labeler
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- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE CORTROSYN ® (cosyntropin) for Injection is intended for use as a diagnostic agent in the screening of patients presumed to have adrenocortical insufficiency. Because of its rapid effect on the adrenal cortex it may be utilized to perform a 30-minute test of adrenal function (plasma cortisol response) as an office or outpatient procedure, using only 2 venipunctures (see DOSAGE AND ADMINISTRATION section). Severe hypofunction of the pituitary - adrenal axis is usually associated with subnormal plasma cortisol values but a low basal level is not per se evidence of adrenal insufficiency and does not suffice to make the diagnosis.
Many patients with proven insufficiency will have normal basal levels and will develop signs of insufficiency only when stressed. For this reason a criterion which should be used in establishing the diagnosis is the failure to respond to adequate corticotropin stimulation. When presumptive adrenal insufficiency is diagnosed by a subnormal CORTROSYN ® test, further studies are indicated to determine if it is primary or secondary.
Primary adrenal insufficiency (Addison’s disease) is the result of an intrinsic disease process, such as tuberculosis within the gland. The production of adrenocortical hormones is deficient despite high ACTH levels (feedback mechanism). Secondary or relative insufficiency arises as the result of defective production of ACTH leading in turn to disuse atrophy of the adrenal cortex.
It is commonly seen, for example, as result of corticosteroid therapy, Sheehan’s syndrome and pituitary tumors or ablation. The differentiation of both types is based on the premise that a primarily defective gland cannot be stimulated by ACTH whereas a secondarily defective gland is potentially functional and will respond to adequate stimulation with ACTH. Patients selected for further study as the result of a subnormal CORTROSYN ® test should be given a 3 or 4 day course of treatment with Repository Corticotropin Injection USP and then retested.
Suggested doses are 40 USP units twice daily for 4 days or 60 USP units twice daily for 3 days. Under these conditions little or no increase in plasma cortisol levels will be seen in Addison’s disease whereas higher or even normal levels will be seen in cases with secondary adrenal insufficiency.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION CORTROSYN ® (cosyntropin) for Injection may be administered intramuscularly or as a direct intravenous injection when used as a rapid screening test of adrenal function. It may also be given as an intravenous infusion over a 4 to 8 hour period to provide a greater stimulus to the adrenal glands. Doses of CORTROSYN ® 0.25 to 0.75 mg have been used in clinical studies and a maximal response noted with the smallest dose.
A suggested method for a rapid screening test of adrenal function has been described by Wood and Associates (1). A control blood sample of 6 to 7 mL is collected in a heparinized tube. Reconstitute 0.25 mg of CORTROSYN ® with 1mL of 0.9% Sodium Chloride Injection, USP to obtain a concentration of 0.25 mg/mL CORTROSYN ® and inject intramuscularly.
The reconstituted drug product should be inspected visually for particulate matter and discoloration prior to injection. Reconstituted CORTROSYN ® should not be retained. In the pediatric population, aged 2 years or less, a dose of 0.125 mg will often suffice.
A second blood sample is collected exactly 30 minutes later. Both blood samples should be refrigerated until sent to the laboratory for determination of the plasma cortisol response by some appropriate method. If it is not possible to send them to the laboratory or perform the fluorimetric procedure within 12 hours, then the plasma should be separated and refrigerated or frozen according to need.
Two alternative methods of administration are intravenous injection and infusion. CORTROSYN ® can be injected intravenously in 2 to 5 mL of saline over a 2-minute period. When given as an intravenous infusion: CORTROSYN ® , 0.25 mg may be added to glucose or saline solutions and given at the rate of approximately 40 micrograms per hour over a 6-hour period.
It should not be added to blood or plasma as it is apt to be inactivated by enzymes. Adrenal response may be measured in the usual manner by determining urinary steroid excretion before and after treatment or by measuring plasma cortisol levels before and at the end of the infusion. The latter is preferable because the urinary steroid excretion does not always accurately reflect the adrenal or plasma cortisol response to ACTH.
The usual normal response in most cases is an approximate doubling of the basal level, provided that the basal level does not exceed the normal range. Patients receiving cortisone, hydrocortisone or spironolactone should omit their pre-test doses on the day selected for testing. Patients taking inadvertent doses of cortisone or hydrocortisone on the test day and patients taking spironolactone or women taking drugs which contain estrogen may exhibit abnormally high basal plasma cortisol levels.
A paradoxical response may be noted in the cortisone or hydrocortisone group as seen in a decrease in plasma cortisol values following a stimulating dose of CORTROSYN ® . In the spironolactone or estrogen group only a normal incremental response is to be expected. Many patients with normal adrenal function, however, do not respond to the expected degree so that the following criteria have been established to denote a normal response: 1.
The control plasma cortisol level should exceed 5 micrograms/100 mL. 2. The 30-minute level should show an increment of at least 7 micrograms/100 mL above the basal level.
3. The 30-minute level should exceed 18 micrograms/100 mL. Comparable figures have been reported by Greig and co-workers (2).
Plasma cortisol levels usually peak about 45 to 60 minutes after an injection of CORTROSYN ® and some prefer the 60-minute interval for testing for this reason. While it is true that the 60-minute values are usually higher than the 30-minute values, the difference may not be significant enough in most cases to outweigh the disadvantage of a longer testing period. If the 60-minute test period is used, the criterion for a normal response is an approximate doubling of the basal plasma cortisol value.
In patient… [Excerpted — this section continues on DailyMed.]
⛔ Contraindications ▾
CONTRAINDICATIONS The only contraindication to CORTROSYN ® (cosyntropin) for Injection is a history of a previous adverse reaction to it.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS Since CORTROSYN ® (cosyntropin) for Injection is intended for diagnostic and not therapeutic use, adverse reactions other than a rare hypersensitivity reaction are not anticipated. A rare hypersensitivity reaction usually associated with a pre-existing allergic disease and/or a previous reaction to natural ACTH is possible. Symptoms may include slight whealing with splotchy erythema at the injection site.
There have been rare reports of anaphylactic reaction. The following adverse reactions have been reported in patients after the administration of CORTROSYN ® and the association has been neither confirmed nor refuted: ● bradycardia ● tachycardia ● hypertension ● peripheral edema ● rash
🔄 Drug Interactions ▾
Drug Interactions Corticotropin may accentuate the electrolyte loss associated with diuretic therapy.
🤰 Pregnancy ▾
Pregnancy Pregnancy Category C. Animal reproduction studies have not been conducted with CORTROSYN ® (cosyntropin) for Injection. It is also not known whether CORTROSYN ® can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. CORTROSYN ® should be given to a pregnant woman only if clearly needed.
🧒 Pediatric Use ▾
Pediatric Use (See DOSAGE AND ADMINISTRATION section.)
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY CORTROSYN ® (cosyntropin) for Injection exhibits the full corticosteroidogenic activity of natural ACTH. Various studies have shown that the biologic activity of ACTH resides in the N-terminal portion of the molecule and that the 1 - 20 amino acid residue is the minimal sequence retaining full activity. Partial or complete loss of activity is noted with progressive shortening of the chain beyond 20 amino acid residue.
For example, the decrement from 20 to 19 results in a 70% loss of potency. The pharmacologic profile of CORTROSYN ® is similar to that of purified natural ACTH. It has been established that 0.25 mg of CORTROSYN ® will stimulate the adrenal cortex maximally and to the same extent as 25 units of natural ACTH.
This dose of CORTROSYN ® will produce maximal secretion of 17-OH corticosteroids, 17- ketosteroids and / or 17 - ketogenic steroids. The extra-adrenal effects which natural ACTH and CORTROSYN ® have in common include increased melanotropic activity, increased growth hormone secretion and an adipokinetic effect. These are considered to be without physiological or clinical significance.
Animal, human and synthetic ACTH (1-39) which all contain 39 amino acids exhibit similar immunologic activity. This activity resides in the C-terminal portion of the molecule and the 22-39 amino acid residues exhibit the greatest degree of antigenicity. In contrast, synthetic polypeptides containing 1-19 or fewer amino acids have no detectable immunologic activity.
Those containing 1-26, 1-24 or 1-23 amino acids have very little immunologic although full biologic activity. This property of CORTROSYN ® assumes added importance in view of the known antigenicity of natural ACTH.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Box of 10 vials of CORTROSYN ® (cosyntropin) for Injection 0.25 mg NDC # 0548-5900-00 Storage Store at 15-30°C (59-86°F). CORTROSYN ® is intended as a single-dose injection and contains no antimicrobial preservative. Any unused portion should be discarded.
Rx only REFERENCES 1. Wood, J.B. et al. LANCET 1.243, 1965.
2. Greig, W.R. et al. J.
ENDOCR 34.411, 1966. 3. McGill, P.E. et al.
ANN RHEUM DIS 26.123, 1967. Amphastar Pharmaceuticals, Inc. Rancho Cucamonga, CA 91730 U.S.A.
REV. 6-21
📦 Storage and Handling ▾
Storage Store at 15-30°C (59-86°F). CORTROSYN ® is intended as a single-dose injection and contains no antimicrobial preservative. Any unused portion should be discarded.
📋 Description ▾
DESCRIPTION CORTROSYN ® (cosyntropin) for Injection is a sterile lyophilized powder in vials containing 0.25 mg of CORTROSYN ® and 10 mg of mannitol to be reconstituted with 1 mL of 0.9% Sodium Chloride Injection, USP. Sodium Hydroxide and Glacial acetic acid may be used to adjust pH. Administration is by intravenous or intramuscular injection.
Cosyntropin is α 1 - 24 corticotropin, a synthetic subunit of ACTH. It is an open chain polypeptide containing, from the N terminus, the first 24 of the 39 amino acids of natural ACTH. The sequence of amino acids in the 1 - 24 compound is as follows: Amino Acids
⚠️ Precautions ▾
PRECAUTIONS General CORTROSYN ® (cosyntropin) for Injection exhibits slight immunologic activity, does not contain animal protein and is therefore less risky to use than natural ACTH. Patients known to be sensitized to natural ACTH with markedly positive skin tests will, with few exceptions, react negatively when tested intradermally with CORTROSYN ® . Most patients with a history of a previous hypersensitivity reaction to natural ACTH or a pre-existing allergic disease will tolerate CORTROSYN ® .
Despite this however, CORTROSYN ® is not completely devoid of immunologic activity and hypersensitivity reactions including rare anaphylaxis are possible. Therefore, the physician should be prepared, prior to injection, to treat any possible acute hypersensitivity reaction. Drug Interactions Corticotropin may accentuate the electrolyte loss associated with diuretic therapy.
Carcinogenesis, Mutagenesis, Impairment of Fertility Long term studies in animals have not been performed to evaluate carcinogenic or mutagenic potential or impairment of fertility. A study in rats noted inhibition of reproductive function like natural ACTH. Pregnancy Pregnancy Category C.
Animal reproduction studies have not been conducted with CORTROSYN ® (cosyntropin) for Injection. It is also not known whether CORTROSYN ® can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. CORTROSYN ® should be given to a pregnant woman only if clearly needed.
Nursing Mothers It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when CORTROSYN ® (cosyntropin) for Injection is administered to a nursing woman. Pediatric Use (See DOSAGE AND ADMINISTRATION section.)
🍼 Nursing Mothers ▾
Nursing Mothers It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when CORTROSYN ® (cosyntropin) for Injection is administered to a nursing woman.
📄 Carcinogenesis, Mutagenesis, Impairment of Fertility ▾
Carcinogenesis, Mutagenesis, Impairment of Fertility Long term studies in animals have not been performed to evaluate carcinogenic or mutagenic potential or impairment of fertility. A study in rats noted inhibition of reproductive function like natural ACTH.
📄 Package Label / Principal Display Panel ▾
PRINCIPLE DISPLAY PANEL - OUTER PACKAGE For Diagnostic Use Only CORTROSYN ® consyntrosin for Injection 0.25 mg For IM or IV use Rx only NDC 71872-7318-1 Contains 1 Single Dose Vial 7318.pdp
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| NDC identity (package / product / labeler codes) | ✓ Available |
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| FDA label (SPL via DailyMed) | ✓ Available |
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| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |